Documentation / technical / api-xdiff-interface.txton commit t/t7003-filter-branch.sh: use test_must_fail rather than '!' (c8a0869)
   1xdiff interface API
   2===================
   3
   4Talk about our calling convention to xdiff library, including
   5xdiff_emit_consume_fn.
   6
   7(Dscho, JC)